Surprised by baby's sex during second-trimester scan; new names needed

Hey everybody. My partner and I are expecting a little DUDE due in [name_f]September[/name_f]. We just learned his sex yesterday at our first (visual) ultrasound. Up until yesterday morning, we felt certain that this baby would be female, and have been stumped for names for a boy since that positive pregnancy test way back in [name_u]January[/name_u]. We are not trying to come up with THE NAME before the bean is born in the fall, but we want to have a few ready to go when we finally meet him face-to-face.

Our criteria for a name are as follows:

  1. It has to have significant history as a name (creative spellings are a no-go as well);
  2. Extra points if it’s a longer or more “formal” full name with potential for laid-back, uncommon nicknames;
  3. It can’t end in -a (too repetitive with our girl’s name) or -r (runs together with our surname);
  4. We’d like something that is not super-duper popular - outside the SSA Top 100 at least;
  5. No names starting with M or T, as those are our initials and we don’t want to set ourselves up for all M names or whatever.

We’re taking suggestions from now until this guy is born! My reaction when the technician told us his sex was “This baby might be nameless for a week after he comes out!”

Thanks in advance for all your ideas!

[name_m]Bennett[/name_m]
[name_u]Sullivan[/name_u]

Could you tell us what your little girls name is and that might give us something to work with.

[name_m]Archibald[/name_m] - [name_m]Archie[/name_m] - [name_m]Arty[/name_m]
[name_m]Clement[/name_m] - [name_u]Clem[/name_u]
[name_m]Dashiell[/name_m] - [name_u]Dash[/name_u]
[name_m]Desmond[/name_m] - [name_m]Des[/name_m] - [name_m]Dex[/name_m]
[name_m]Fletcher[/name_m] - [name_m]Fletch[/name_m]
[name_m]Louis[/name_m] - [name_m]Louie[/name_m]
[name_m]Walt[/name_m] - [name_m]Walter[/name_m]

[name_m]Conrad[/name_m]
[name_m]Felix[/name_m]
[name_u]Everett[/name_u]
[name_m]Graham[/name_m]
[name_u]Ellis[/name_u]
[name_m]Edmund[/name_m]
[name_m]Silas[/name_m]
[name_m]Abraham[/name_m]/[name_m]Abram[/name_m]